Hair trimmer



FIG. 1 is a front perspective view of a hair trimmer showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is a front perspective view of the hair trimmer in a detached state.

The broken lines in the figures are for the purposes of illustrating portions of the hair trimmer, which form no part of the claimed design. 

CLAIM The ornamental design for a hair trimmer, as shown and described. 